Basic Settings - Lenze 8400 StateLine C Reference Manual

8400 StateLine C | Reference manual
Motor control (MCTRL)
Sensorless control for synchronous motors (SLPSM)
5.8.3

Basic settings

The following "Initial commissioning steps" must be performed to commission the
sensorless control for synchronous motors:
Initial commissioning steps
1. Select motor control:
C00006
2. Set the motor selection/motor data
• When selecting and parameterising the motor, the motor nameplate data and the equivalent circuit
diagram data are relevant. Detailed information can be found in the
chapter.
Depending on the motor manufacturer, proceed as follows:
Lenze motor:
Selecting a motor from the motor catalogue in the
»Engineer«
- or -
1. Set the motor nameplate data
2. Automatic motor data identification
3. Set speed switching thresholds between open-loop and closed-loop controlled operation:
• Set transition speed from open-loop to closed-loop operation in
motor speed (C00087).
• Set transition speed from closed-loop to open-loop operation in
motor speed (C00087).
Tip!
• With voltage-adjusted motors, a speed switching threshold of 10 % is recommended.
• As a rule of thumb, the speed switching threshold should be selected as follows:
4. Set open-loop accelerating current in
• This value defines the height of the current that is injected during the acceleration process.
• The accelerating current must be dimensioned so that the required torque in the lower speed range can
always be reached (acceleration torque + load torque):
5. Set open-loop steady-state current in
• This value defines the height of the current for processes without acceleration (e.g. standstill or constant
setpoint speed ).
6. For improving the operating characteristics:
If required, adapt the filter time for reconstructing the rotor position and the actual speed value through the
motor model in
• We recommend using the Lenze setting:
Filter time rotor position (C00998/1) = 3 ms
Filter time actual speed value (C00998/2) = 5 ms
• Deviant from this, the following value range can be used:
Filter time rotor position (C00998/1) = 2 ... 5 ms
Filter time actual speed value (C00998/2) = 3 ... 8 ms
7. For protecting the motor from demagnetisation:
Set the ultimate current in C00939.
180
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= "3: SLPSM: Sensorless PSM"
( 107)
C00996/1...2 [%]
C00995/1
C00995/1 [%]
C00995/2
C00998/1 and C00998/2.
L
"Motor selection/Motor
Third party manufacturer's motor:
1. Set the motor nameplate data
2. Automatic motor data identification
equivalent circuit diagram manually:
C00084: Motor stator resistance
C00085: Motor stator leakage inductance
C00996/2
C00996/2
U [V]
Rated, motor
--------------------------------------- 10
⋅
=
U [V]
Rated, FI
in [%] with regard to the rated motor current (C00088).
M [Nm]
Meax
------------------------------ - I [A] 1.3
⋅ ⋅
=
Rated, motor
M [Nm]
Rated
in [%] with regard to the rated motor current (C00088).
Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
data"
or set known
in [%] with regard to the rated
in [%] with regard to the rated